7125553 has 2 divisors, whose sum is σ = 7125554. Its totient is φ = 7125552.

The previous prime is 7125527. The next prime is 7125583. The reversal of 7125553 is 3555217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6310144 + 815409 = 2512^2 + 903^2 .

It is an emirp because it is prime and its reverse (3555217) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7125553 is a prime.

It is not a weakly prime, because it can be changed into another prime (7125583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3562776 + 3562777.

It is an arithmetic number, because the mean of its divisors is an integer number (3562777).

Almost surely, 2^7125553 is an apocalyptic number.

It is an amenable number.

7125553 is a deficient number, since it is larger than the sum of its proper divisors (1).

7125553 is an equidigital number, since it uses as much as digits as its factorization.

7125553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5250, while the sum is 28.

The square root of 7125553 is about 2669.3731473887. The cubic root of 7125553 is about 192.4300347301.

The spelling of 7125553 in words is "seven million, one hundred twenty-five thousand, five hundred fifty-three".